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A Search for the Mechanism of Direct Copper Plating via Bridging Ligands
Home
Publications
A Search for the Mechanism of Direct Copper Plating via Bridging Ligands
A Search for the Mechanism of Direct Copper Plating via Bridging Ligands
CY
C. H. Yang
C. H. Yang
YW
Y. Y. Wang
Y. Y. Wang
CW
C. C. Wan
C. C. Wan
CC
C. J. Chen
C. J. Chen
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1 November 1996
journal article
Published by
The Electrochemical Society
in
Journal of the Electrochemical Society
Vol. 143
(11)
,
3521-3525
https://doi.org/10.1149/1.1837247
Abstract
[[abstract]]©1996 Electrochem - The mechanism of copper deposition by direct plating on a nonconductive substrate has been investigated. Studies using electron spectroscopic chemical analysis show that the immersion of a sodium sulfide solution does lead to the formation of palladium sulfide. Sulfide acts as a bridging ligand;it can increase the speed of direct plating dramatically. Compounds with similar bridging property were later found to show the same promotion effect in the direct plating process. These compounds include thiourea, sodium thiocyanate, potassium iodide, and sodium cyanide. It was also found that the addition of these compounds could cause a shift of the rest potential. In addition, copper was found to partially dissolve if the current was interrupted. These phenomena can all be explained by the proposed mechanism.[[department]]化學工程學
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Cited by 20 articles